abstract |
Crude chlorosilanes, such as crude trichlorosilane and crude silicon tetrachloride, containing a boron compound and/or a phosphorus compound, in the presence of an alkylphenol such as 2-methylphenol, are brought into contact with chlorine (preferably crude A method for producing purified chlorosilanes, characterized in that the distillation is carried out after distilling (1 to 3000 ppm mol per 1 mol of chlorosilanes). |